I was in same boat. When we enter work history, we have to specify each position and each country. In my case I had 4 job titles due to promotions and I traveled back and forth between India so ended up with 12 entries. What my employer did was that they put in a table listing all job titles, start date , end date, salary, hrs/per week and role performed.
Job titles were cosmetic so after the table, they mentioned the job duties for each of the roles performed (and I had only two roles).
See if this makes sense for you...